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| author | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-03 02:29:00 +0000 |
|---|---|---|
| committer | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-03 02:29:00 +0000 |
| commit | 7cef6c97cbe9575d82af3934ba9db98706d40dbd (patch) | |
| tree | 65c401413cfba6d2049e2a002755074729d4e079 /gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c | |
| parent | f517b36eec084c177098f54c4755ab7222fb7e2f (diff) | |
| download | gcc-7cef6c97cbe9575d82af3934ba9db98706d40dbd.tar.gz | |
* loop-unswitch.c (unswitch_loop): Pass probabilities to loopify.
* tree-ssa-loop-unswitch.c (tree_unswitch_loop): Pass probabilities
to loop_version.
* cfgloopmanip.c (scale_loop_frequencies): Export.
(loopify): Scale the frequencies by prescribed coefficients.
(set_zero_probability): New function.
(duplicate_loop_to_header_edge): Improve updating of frequencies.
(lv_adjust_loop_entry_edge, loop_version): Set probabilities
and frequencies according to arguments.
* tree-ssa-loop-manip.c (tree_unroll_loop): Set probabilities
correctly.
* cfg.c (scale_bbs_frequencies_int): Allow scaling the frequencies up.
* modulo-sched.c (sms_schedule): Set probabilities for entering
versioned loop correctly.
* tree-vect-transform.c (vect_transform_loop): Ditto.
* cfgloop.h (loopify, loop_version): Declaration changed.
(scale_loop_frequencies): Declared.
* gcc.dg/tree-ssa/update-unroll-1.c: New test.
* gcc.dg/tree-ssa/update-unswitch-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120378 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c b/gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c new file mode 100644 index 00000000000..499b78b0137 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/update-unswitch-1.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -funswitch-loops -fdump-tree-unswitch-blocks" } */ + +int bla(int p) +{ + unsigned i, s = 1; + + for (i = 4; i < 100; i++) + { + if (p) + s += i/2; + else + s *= i/2; + } + + return s; +} + +/* We used to make the probability that the first of the loops created + by unswitching is entered 100%, which is not correct. */ + +/* { dg-final { scan-tree-dump-not "Invalid sum" "unswitch"} } */ +/* { dg-final { scan-tree-dump-not "SUCC: 3 .100.0%" "unswitch"} } */ +/* { dg-final { cleanup-tree-dump "unswitch" } } */ |